I trie to install a 1.12.2 minecraft forge server on a Raspberry 4. But I get this error:
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:208)
at java.desktop/java.awt.Window.<init>(Window.java:548)
at java.desktop/java.awt.Frame.<init>(Frame.java:423)
at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:408)
at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:170)
at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:143)
Im Iin via putty and enablet the x11 forwarding. I use Xming in the background.
What means the error? And how can I fix it?